Canon Kabushiki Kaisha

Kazuhiro Hosohara

Toshiyuki Watanabe

Tomoya Tateishi

Takahiro Azeta

Takeo Kawanami

Jumpei Nitta

Shinichi Nishida

Yoshihiro Ito

Hiroyuki Munetsugu

Goshi Ozaki

Mitsuhiro Sato

Sohta Sugimoto

Noritomo Yamaguchi

Masahiro Suetsugu

Tatsuo Nishiyama

Yuichiro Okawa

Fuyuto Yamashita

An image forming apparatus that includes an actuator to drive a stirring member, an indicating unit to execute a remaining toner amount indication based on an output value from a first detection unit, and a control unit control the actuator, the first detection unit, and the indicating unit. A control unit executes (i) a first control of controlling the actuator to start driving of the stirring member based on a detection, by a second detection unit, of movement of an opening and closing member from the open position to the closed position, (ii) a second control of controlling the first detection unit to output the output value, and (iii) a third control of controlling the indicating unit to execute the remaining toner amount indication.

Image forming apparatus

A sheet feeding apparatus includes a first supporting portion movable between a closed position and an open position supporting a sheet, an interlocking portion to move the first supporting portion from the closed position to the open position when a cover is opened, and a second supporting portion. A feed portion feeds a sheet supported by the first and second supporting portions in a sheet feeding direction. A moving angle of the first supporting portion moving from the closed position to the open position is smaller than a moving angle of the cover moving from the closed position to the open position, and the first supporting portion includes an upstream end portion and a downstream end portion. In a state where the cover and first supporting portion are open, the upstream end portion is further from an exterior surface of the cover than the downstream end portion.

Sheet feeding apparatus and image forming apparatus

An image forming apparatus includes an attachable/detachable storage unit having a positioned portion projecting downstream in an attachment direction of the storage unit, a conveyance member, an image forming unit to form an image on a sheet conveyed by the conveyance member, and a conveyance unit to move between a first position and a second position. Engagement of the positioned portion with a positioning portion of the image forming apparatus causes the storage unit to be positioned with respect to the image forming apparatus. The conveyance unit includes a contact portion and a depressed portion. In a case where the contact portion of the conveyance unit comes into contact with the storage unit and the conveyance unit is moved from the second position to the first position by the storage unit, the positioned portion does not come into contact with the depressed portion of the conveyance unit.

A sheet feeding apparatus includes an opening/closing unit including a stacking portion, a moving unit including a feed roller and a moving member supporting the feed roller, an urging portion, and a transmitting portion to transmit urging force of the urging portion to the moving member. The opening/closing unit presses and moves the moving unit in the second direction against the urging force while the opening/closing unit moves from the open position to the closed position. A force that the opening/closing unit receives from the moving unit in a state where the opening/closing unit is at the closed position is smaller than a maximum force that the opening/closing unit receives from the moving unit that is urged in the first direction by the urging portion while the opening/closing unit moves from the open position to the closed position.

A sheet feeding device includes a tray, a feeding member, a conveying member, a separation member, a transmission unit, and a biasing member. The separation member abuts the conveying member and separates a single sheet from sheets fed by the feeding member. The transmission unit includes first and second portions respectively having first and second transmission surfaces. Where the first and second transmission surfaces abut each other, the first portion drives the second portion that drives the feeding member. The biasing member biases either of the first and second portions so that the first and second transmission surfaces move away from each other. The conveying member is driven in a state where the separation member abuts the conveying member and the feeding member abuts the sheet stacked on the tray and is stopped. Thereafter, the first and second transmission surfaces abut each other, and the feeding member is driven.

Sheet feeding device and image forming apparatus

A sheet feeding apparatus includes a sheet supporting portion configured to support a sheet, a feed rotary member configured to feed the sheet supported by the sheet supporting portion, a curved conveyance path through which the sheet fed by the feed rotary member passes and which is curved upward, an upper conveyance path disposed above the sheet supporting portion so as to pass through a sheet and configured to join with the curved conveyance path, and a driven rotary member disposed inside of the curved conveyance path in a curved direction thereof and driven to rotate by the sheet passing though the curved conveyance path.

A sheet feeding apparatus includes a sheet supporting portion, a feeding portion, a conveying portion configured to convey the sheet fed by the feeding portion, a separation member, a returning portion, the returning portion pushing the sheet back toward the sheet supporting portion by moving from a retracting position to a protruding position, and a pressing portion including a contact portion configured to contact the sheet. The pressing portion is configured to press the sheet from above via the contact portion such that the sheet is pushed toward the returning portion in a state where the returning portion is positioned at the protruding position and below the sheet.

An image forming apparatus includes an apparatus body including a side surface portion in which an opening is formed, a cartridge, an opening/closing member configured to be moved with respect to the apparatus body between a closed position and an opened position, a sheet stacking portion, a feed roller, and a lifting member configured to lift and lower the feed roller. In the state where the opening/closing member is positioned in the closed position, at least part of the lifting member is positioned an inside of a movement locus through which the cartridge passes in a case where the cartridge is attached to and detached from the apparatus body. In a state where the opening/closing member is positioned in the opened position, a whole of the lifting member is positioned an outside of the movement locus.

Image forming apparatus including external sheet feed tray with sheet feeder

The apparatus includes a first clutch and a second clutch. The first clutch transmits rotation of the driving unit in a first rotation direction to the first feeding device without transmitting rotation of the driving unit in a second rotation direction that is reverse to the first rotation direction to the first feeding device. The second clutch transmits the rotation of the driving unit in the second rotation direction to the conveyance device and the double-side printing conveyance device and without transmitting the rotation of the driving unit in the first rotation direction to the conveyance device and the double-side printing conveyance device. The third transmission path is configured to transmit the rotation of the driving unit to a conveyance device. The fourth transmission path is configured to transmit the rotation of the driving unit to a double-side printing conveyance device.

Recording medium conveyance apparatus and image forming apparatus

In a sheet feeding apparatus without increase in size and without fluctuation in sheet feeding interval, a clutch is brought into a disconnected state after a separation roller separates from a feed roller.

The image forming apparatus configured such that a primarily-transferred toner image is secondarily transferred onto a recording material at a secondary transfer portion formed between a transfer belt and a secondary transfer roller, includes a belt unit configured to support the transfer belt in a rotatable manner; and a sheet feeding unit configured to feed the recording material toward the secondary transfer portion. Both the belt unit and the sheet feeding unit are positioned and fixed on the same main stay, so that higher printing accuracy is achieved in consideration of a mutual positional relationship between the sheet feeding portion and the image forming portion.

Provided is a small sized belt conveying apparatus provided with a separating unit configured to move a transfer member and an image forming apparatus provided with the belt transfer apparatus. The image forming apparatus includes a drive unit configured to transmit a drive force from a drive source provided in an apparatus body, and a drive transmitting unit configured to transmit the drive force branched and transmitted from the drive unit. The separating unit is configured to move the transfer member by a drive force transmitted by the drive transmitting unit via the drive unit.

Belt conveying apparatus and image forming apparatus

A sheet feeding apparatus includes a stacking plate configured to stack sheets, a sheet feeding unit configured to feed the sheets by contacting the sheets stacked on the stacking plate, an elevating unit configured to elevate the stacking plate by a drive transmitted from a drive unit, a drive transmission unit configured to transmit the drive from the drive unit to drive the sheet feeding unit, and a clutch mechanism configured to cause the drive transmission unit to transmit the drive from the drive unit to the sheet feeding unit after the elevating unit urges the sheets stacked on the stacking plate toward the sheet feeding unit by elevating the stacking plate.

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Kawasaki, Japan

Kazuhiro Hosohara